I've tested and it works for the most part. Though it seems a little sluggish. And it Arm not Arm64 so if you want gapps choose ARM 7.0. As the thread says Video and audio recording doesn't work (though I believe the mic works).
And yes I know it's for Android One Second gen devices but as the Swift is a clone of the GM 4G it works. And I've tested that it works.
Just thought I'd share the thread